Answer: The correct answer would be B
Explanation: Putting in only Hablo would mean something along the lines of I do not speak Flight Attendant
Putting in Hablo a would mean you do not speak to flight attendant
But finally putting in Hablo al would mean I do not speak to the flight attendant, and that sentence makes the most sense out of all of them.
Lo que nubia no entendió es ...
El proverbio que usaba su padre.
¡espero que esto ayude!